The Whois change seems to have first been spotted by blogger Elliot Silver, who noted that X.com had been collecting dust since its days as a PayPal predecessor. On July 3rd, the domain changed hands to a private new owner and now we have confirmation that it is a very enthusiastic (and apparently nostalgic) Elon.

Musk previously owned X.com when it served as a home for his financial services startup that was eventually rolled up with another company called Confinity in a deal that would be rebranded as PayPal in 2001.

Single letter domains are valuable and x is obviously the coolest, most versatile letter in the alphabet so it wouldn’t be surprising if the sale was priced well above $5 million. That kind of price tag would put it well within the most expensive domain names hall of fame, though we’ll likely have to wait for a future filing to reveal the specifics.